This sign is part of a brand new campaign people can expect to see at every pool in Milwaukee County. It reads diarrhea and swimming don't mix.

The Milwaukee Health Department said if you or your child have any symptoms of shigella do not go in the water.

The Health Department shigella can spread very easily in wading pools where there is shallow water, young children and the hot sun beating down.

The Health Department said they have more than 100 confirmed cases of shigellosis. Last year, 11 cares were reported the entire year.

The Health Department said it sees a lot of cases in day cares or any other setting with young children. The reason it's putting another warning out right now is that it doesn't want the infection to carry over into the new school year.

"We are concerned about the resumption of school this fall, so we'd really like to mitigate the spread of disease prior to the resumption of school. And this disease could spread very rapidly, especially in primary school setting. Again, the primary route of exposure is infected person to another," Milwaukee Health Department Director Paul Biedrzycki said.

If you or your kid has diarrhea don't go swimming. If you change diapers, wash your hands thoroughly, keeping the diaper changing area clean.